How Autotaxin Affects Rheumatoid Arthritis and Bone Loss
Author Information
Author(s): Heo Gwangbeom, Jeong Sihyun, Park Soyeong, Kim Su Jin, Lee Yunna, Woo Seong Ji, Kim Kyunghwan, Park Byung-Hyun, Rhee Sang Hoon, Im Eunok
Primary Institution: Pusan National University
Hypothesis
ATX deficiency in macrophages causes RANK dysregulation, which ameliorates arthritis and inhibits osteoclastogenesis.
Conclusion
Myeloid-specific deletion of autotaxin reduces joint inflammation and bone erosion in a collagen-induced arthritis mouse model.
Supporting Evidence
- ATX deficiency suppressed joint inflammation, bone resorption, and osteoclast differentiation.
- Mean disease score of Atx+/+ mice was significantly higher than that of AtxΔME/ΔME mice.
- Pharmacological inhibition of ATX with PF-8380 reduced arthritis symptoms in DBA/1 mice.
Takeaway
This study shows that a protein called autotaxin can make arthritis worse, so blocking it might help treat the disease.
Methodology
The study used a collagen-induced arthritis mouse model with myeloid lineage-restricted Atx-knockout mice and DBA/1 mice treated with the ATX inhibitor PF-8380.
Potential Biases
Potential bias due to the use of a specific mouse model and the focus on autotaxin without considering other factors.
Limitations
The study does not establish a direct link between lipid raft disruption and the anti-inflammatory effects observed.
Participant Demographics
Mice used were male AtxΔME/ΔME and Atx+/+ mice, aged 12 weeks, and DBA/1 mice aged 11 weeks.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website